Parallel / serial coupling of Dolfinx

dolfinx
1

Hi,

I am trying to develop a framework in Dolfinx in which I solve a 3D model (thermal) in which I embedded a heat source term based on a 1D model (also in DolfinX). Ideally, I would like every process to have its own 1D model. Currently, if I run the code in parallel, the 1D problem is automatically parallelized too.

So, my question is: Is it possible to run a large 3D model on multiple tasks and allow each task to create a smaller serial 1D model?

Thank you!

Francis

2

The mesh constructor has a communicator as the first argument, so in principle you could pass mpi4py.MPI.COMM_WORLD to the 3D mesh, and mpi4py.MPI.COMM_SELF to each 1D mesh you’d like to have on the current process. It will be up to you to handle communication between the 3D and the 1D meshes, however.

3

Thank you for your fast response, I will try that today.